Abstract
We find that salicylic acid and ethephon treatment in hot pepper increases the expression of a putative basic/leucine zipper (bZIP) transcription factor gene, CabZIP1. CabZIP1 mRNA is expressed ubiquitously in various organs. The green fluorescent protein-fused transcription factor, CabZIP1::GFP, can be specifically localized to the nucleus, an action that is consistent with the presence of a nuclear localization signal in its protein sequence. Transient overexpression of the CabZIP1 transcription factor results in an increase in PR-1 transcripts level in Nicotiana benthamiana leaves. Using chromatin immunoprecipitation, we demonstrate that CabZIP1 binds to the G-box elements in native promoter of the hot pepper pathogenesis-related protein 1 (CaPR-1) gene in vivo. Taken together, our results suggest that CabZIP1 plays a role as a transcriptional regulator of the CaPR-1 gene.
Original language | English |
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Pages (from-to) | 55-62 |
Number of pages | 8 |
Journal | Biochemical and biophysical research communications |
Volume | 344 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2006 May 26 |
Bibliographical note
Funding Information:This study was supported by a grant (R11-2003-008-02001-0) from the Korea Science and Engineering Foundation to the Plant Signaling Network Research Center.
Keywords
- CaPR-1 promoter
- CabZIP1
- Chromatin immunoprecipitation (ChIP)
- Hot pepper (Capsicum annuum L.)
- Nuclear localization
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Cell Biology